Marcelo Vanzin created HDFS-3680:
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             Summary: Allows customized audit logging in HDFS FSNamesystem
                 Key: HDFS-3680
                 URL: https://issues.apache.org/jira/browse/HDFS-3680
             Project: Hadoop HDFS
          Issue Type: Improvement
          Components: name-node
    Affects Versions: 3.0.0
            Reporter: Marcelo Vanzin
            Priority: Minor
         Attachments: accesslogger-v1.patch

Currently, FSNamesystem writes audit logs to a logger; that makes it easy to 
get audit logs in some log file. But it makes it kinda tricky to store audit 
logs in any other way (let's say a database), because it would require the code 
to implement a log appender (and thus know what logging system is actually 
being used underneath the façade), and parse the textual log message generated 
by FSNamesystem.

I'm attaching a patch that introduces a cleaner interface for this use case.

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